Google AI Launches Gemini 3.1 Flash TTS, Next-Gen Text-to-Speech Model
Logan Kilpatrick, Head of Developer Relations at Google AI, announced the launch of Gemini 3.1 Flash TTS, Google's next-generation text-to-speech model, which supports scene instructions, speaker-level control, audio tagging, "more natural and expressive" voices, and approximately 70 languages. The model is now available to developers through the new audio sandbox in Google AI Studio and the Gemini API.
Public technical documentation shows that the model introduces an "audio tagging" mechanism at the audio control level, allowing developers to control pitch, rhythm, and emotional expression using natural language, while also supporting multi-speaker configurations and multilingual mixed output, enhancing flexibility for content production and interactive voice applications.
Source: Public Information
ABAB AI Insight
3.1 Flash TTS的发布，标志AI语音从“通用播报”走向“场景化表演”。当语音可以被“指令”精准控制风格与节奏，其产品边界就从“TTS工具”拓展为“角色生成引擎”，极大强化了游戏、播客、互动媒体与客服系统中的叙事与情绪控制能力。
从商业结构看，谷歌正将Gemini的声音能力与AI Studio、Vertex等平台产品深度绑定，形成“语音即服务”的完整链条。开发者不再需要独立采购TTS与角色配置服务，而是直接在统一平台调用高度可控的语音模型。这将加速内容生成与人机交互的“低门槛工业化”。
更深层地，这一能力反映了大模型公司的“控制层”战争已从纯文本向多模态迁移。在Gemini生态里，语音不仅是输入输出通道，还成为用户行为与数据采集的高维界面，有助于构建更精细的用户画像与互动模型。TTS的“自然表达”提升，实质是谷歌在AI触达真实场景中的一次关键标准化升级。